Re: Upgrading RAM on Dell Dimension E521

Hi John_ S1972,

We are sorry you are having issues with you new RAM. It does sound like an issue with the density. However, you may also check to make sure you have the latest BIOS. If you do, or if updating the BIOS does not work, we would be happy to return the RAM and send you a low density part. Please contact us here. Let us know if you have any further questions.